Integrated dual-mode soil sample preparation device

Abstract

The utility model discloses an integrated double mode geotechnical sample preparation device, including compaction subassembly, cutter and fixed frame, the fixed frame includes horizontal upper fixed plate and lower fixed plate, and compaction subassembly is connected on the upper fixed plate, and the cutter is connected on the lower fixed plate, compaction subassembly includes transmission part and vertical compaction rack, and the guide component is used for guiding compaction rack to move up and down along the vertical direction, the compaction rack lower extreme is connected with the disturbance boss, and the disturbance boss is used for disturbing soil when remolding soil sample preparation, sample preparation carousel system includes sample preparation carousel, rotation column and rotation motor, and the disturbance boss is just above the rotation carousel, the cutter includes cutter blade and cutter sliding block, and the upper surface of lower fixed plate is provided with sliding block track, and the sliding block track extends from the lower fixed plate outside to the sample preparation carousel, and the cutter is fixed with cutter sliding block, and makes the cutter sliding block slide into the sliding block track.

Description

Technical Field

[0001] This utility model belongs to the technical field of geotechnical testing devices, specifically relating to an integrated dual-mode geotechnical sample preparation device. Background Technology

[0002] In the field of civil engineering, sample preparation is a crucial step in studying soil properties, but existing technologies have significant shortcomings. For a long time, the equipment for preparing undisturbed soil and remolded soil has been independent, necessitating the use of two different sets of equipment in laboratories. Remolded soil requires compaction or static pressing to control its density, while undisturbed soil requires special protection of its original structure. This leads to frequent equipment switching, cumbersome operations, and a high risk of introducing errors.

[0003] Furthermore, traditional methods also face the problem of sample damage. For example, during the demolding process of undisturbed soil, external forces may damage the integrity of the soil structure; and in the preparation of remolded soil, insufficient pressure control often leads to uneven density, directly affecting the reliability of test data (errors can reach 10%-20%). Most existing equipment relies on manual operation or fixed modules, has a low degree of automation, and is difficult to standardize operations and quickly switch modes, further limiting work efficiency and the consistency of results. Utility Model Content

[0004] This invention provides an integrated dual-mode geotechnical sample preparation device, which achieves an efficient and compatible preparation process for remolded soil and undisturbed soil by integrating a dual-mode switching mechanism.

[0005] Therefore, the present invention adopts the following technical solution:

[0006] An integrated dual-mode geotechnical sample preparation device includes a compaction component, a cutter, and a fixing frame;

[0007] The fixed frame includes a horizontal upper fixed plate and a lower fixed plate, the compaction assembly is connected to the upper fixed plate, and the cutter is connected to the lower fixed plate;

[0008] The compaction assembly includes a transmission component and a vertical compaction rack. The transmission component is fixed to the upper surface of the upper fixed plate. A long groove is opened in the center of the upper fixed plate, and the long groove passes through the upper fixed plate. The vertical compaction rack passes through the long groove and is connected to the transmission component. A guide component is also connected between the compaction rack and the upper fixed plate. The guide component is used to guide the compaction rack to move up and down in the vertical direction. A disturbance protrusion is connected to the lower end of the compaction rack. The disturbance protrusion is used to disturb the soil during the preparation of the remolded soil sample.

[0009] The sample preparation turntable system includes a sample preparation turntable, a rotating column, and a rotating motor. The rotating motor is fixed at the center of the lower surface of the lower fixed plate. The rotating shaft of the rotating motor is vertically upward. The rotating shaft of the rotating motor is fixed to the rotating column. The upper end of the rotating column is fixed to the sample preparation turntable. The rotating column drives the rotating turntable to rotate. The rotating turntable is located on the upper surface of the lower fixed plate. There is a disturbance protrusion directly above the rotating turntable.

[0010] The cutter includes a cutting blade and a cutting slider. A slider track is provided on the upper surface of the lower fixed plate. The slider track extends from the outside of the lower fixed plate to the sample preparation turntable. The cutter and the cutting slider are fixed so that the cutting slider slides into the slider track.

[0011] Furthermore, the transmission component includes a rotary motor, a rotating rod, and a gear; the rotary motor is fixed to the upper surface of the upper fixed plate, the rotating shaft of the rotary motor is horizontally fixed to the rotating rod, the gear is fixedly connected to the rotating rod, and the rotating rod drives the gear to rotate; the gear is embedded in a long slot and meshes with a compacted rack.

[0012] Furthermore, the compaction rack includes a rack, a fixing ring, a compaction hammer, and a disturbance protrusion. The lower end of the rack is connected to the fixing ring, and a threaded hole is opened at the center of the bottom surface of the fixing ring. A vertical compaction hammer is connected in the threaded hole. The threaded connection facilitates the replacement of compaction hammers of different diameters. A disturbance protrusion is provided on the bottom of the compaction hammer. The disturbance protrusion is used to disturb the soil when preparing the remolded soil sample.

[0013] The beneficial effects of this utility model are as follows:

[0014] This device not only solves the problems of traditional equipment being limited in function, complex in operation, and lacking in accuracy, but also enhances its adaptability to different application scenarios. It provides a precise, flexible, and highly integrated solution for soil sampling, greatly improving the efficiency of sample preparation and the reliability of data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the sample preparation device of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the compaction rack of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fixed frame of this utility model;

[0018] Figure 4 This is a schematic diagram of the rack and sample preparation turntable of this utility model;

[0019] In the picture:

[0020] 1-Compacting assembly; 11-Rotating motor; 12-First control module; 13-Rotating rod; 14-Compacting rack; 141-Rack; 1411-Rail; 142-Fixing ring; 143-Compacting hammer; 1431-Disturbing protrusion; 15-Gear.

[0021] 2-Cutter: 21-Cutter blade; 22-Cutter slider.

[0022] 3-Fixed frame: 31-Fixed pulley; 311-Fixed column; 312-Hollow pulley; 313-Central column; 32-Upper fixed plate; 33-Support leg column; 34-Lower fixed plate; 35-Slider track; 36-Sample preparation turntable system; 361-Sample preparation turntable; 362-Rotating column; 363-Rotating motor; 37-Second control module. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] An integrated dual-mode geotechnical sample preparation device, the main components of which are divided as follows: Figure 1 As shown, it mainly consists of three parts: the compaction assembly 1, the cutter, and the fixed frame 3.

[0025] The fixed frame 3 includes an upper fixed plate 32, a support leg column 33 and a lower fixed plate 34. The entire fixed frame 3 is cubic in shape. The upper fixed plate 32 and the lower fixed plate 34 are horizontally fixed to the support leg column 33. The compaction assembly 1 is connected to the upper fixed plate 32 and the cutter is connected to the lower fixed plate 34.

[0026] The compaction assembly 1 includes a rotary motor 11, a first control module 12, a rotating rod 13, a gear, and a compaction rack 14. The rotary motor 11 is fixed to the upper surface of the upper fixed plate 32. The rotating shaft of the rotary motor 11 is horizontally fixed to the rotating rod 13. The gear is fixedly connected to the rotating rod 13, and the rotating rod 13 drives the gear to rotate. A long groove is opened in the center of the upper fixed plate 32, which runs through the upper and lower surfaces of the upper fixed plate 32. The gear is embedded in the long groove, and a vertical compaction rack 14 is inserted in the long groove. The compaction rack 14 meshes with the gear, and when the gear rotates, it drives the rack to move in the vertical direction. A guide assembly is also connected between the compaction rack 14 and the upper fixed plate 32. The guide assembly is used to guide the compaction rack 14 to move up and down in the vertical direction.

[0027] The compaction rack 14 mainly consists of a rack, a fixing ring 142, a compaction hammer 143, and a disturbance protrusion 1431. The lower end of the rack is connected to the fixing ring 142, and a threaded hole is opened at the center of the bottom surface of the fixing ring 142. The vertical compaction hammer 143 is connected in the threaded hole. The threaded connection makes it easy to replace compaction hammers 143 of different diameters. The bottom of the compaction hammer 143 is provided with a disturbance protrusion 1431. The disturbance protrusion 1431 is a metal protrusion set on the surface of the compaction hammer 143 in contact with the soil, which plays a role in disturbing the soil during the remolded soil production process.

[0028] The guide assembly consists of a fixed post 311, a central pulley, and a central post 313. It is fixed to the central opening of the upper fixed plate 32 and used to fix the compacting rack 14. The entire structure of the fixed rack consists of gears and fixed pulleys 31 working together. The rack first engages with the gear post, and after engagement, the gear prevents the rack from moving up and down. Fixed pulleys 31 are located on the three sides of the central opening of the fixed plate to prevent the rack from moving left, right, or backward. Slide rails are provided on the corresponding surfaces of the rack to reduce resistance during its up-and-down movement.

[0029] The sample preparation turntable system 36 includes a sample preparation turntable, a rotating column 362, and a rotating motor 363. The rotating motor 363 is fixed at the center of the lower surface of the lower fixed plate 34. The rotation axis of the rotating motor 363 is vertically upward. The rotation axis of the rotating motor 363 is fixed to the rotating column 362. The upper end of the rotating column 362 is fixed to the sample preparation turntable. The rotating column 362 drives the rotating turntable to rotate. The rotating turntable is located on the upper surface of the lower fixed plate 34. The disturbance protrusion 1431 is directly above the rotating turntable.

[0030] The cutter includes a cutter blade 21 and a cutter slider 22. A slider track 35 is provided on the upper surface of the lower fixed plate 34. The slider track 35 extends from the outside of the lower fixed plate 34 to the sample preparation turntable. The cutter and the cutter slider 22 are fixed together, so that the cutter slider 22 slides into the slider track 35.

[0031] How to use:

[0032] s1. Reconstituted Soil Creation:

[0033] Before preparing the remolded soil samples, the large samples were first compacted according to the "Standard for Geotechnical Testing Methods," then passed through a 2 mm standard sieve. The sieved soil samples were then placed in a 105°C oven to dry their original moisture content. Finally, the dried soil samples were removed and mixed according to the test requirements. The mixed soil samples were then kept moist and allowed to stand for 24 hours before being used for sample preparation using this device. The county sample preparation process is as follows:

[0034] s11. Select the compaction hammer 143 according to the required sample size for the experiment, and install the compaction hammer 143 under the rack (assembled with the internal thread of the retaining ring 142). Adjust the distance between the compaction hammer 143 and the lower fixing plate 34 through the first control module 12 to exceed the height of the sample preparation tube.

[0035] s12. Place the prepared soil into the sample preparation tube, and place the sample preparation tube on the sample preparation turntable so that the sample preparation tube and the compaction hammer 143 are on the same axis.

[0036] s13. Static pressure method steps: The first control module 12 is used to adjust the descent height of the compaction hammer 143 to achieve the required sample height for the test. After sample preparation, the compaction hammer 143 is raised to the initial position.

[0037] s14. Compaction method steps: The first control module 12 adjusts the descent height of the compaction hammer 143 to achieve the height of the first compaction. After compaction is completed, the second control module 37 rotates the sample preparation cylinder to disturb the soil. After disturbance, the compaction hammer 143 is raised to the initial position, soil is added into the sample preparation cylinder, and the second compaction is carried out.

[0038] Precautions:

[0039] 1. This operation must be performed under professional protective measures;

[0040] 2. When using this device, the sample preparation cylinder and the compaction hammer 143 must be on the same axis.

[0041] s2. Preparation of undisturbed soil samples:

[0042] s21. The distance between the compaction hammer 143 and the lower fixing plate 34 is adjusted by the first control module 12 to exceed the height of the original soil sample.

[0043] s22. Place the undisturbed soil sample taken from the experimental site on the sample preparation turntable, and fix and clamp the undisturbed soil sample by controlling the height of the compaction hammer 143 through the first control module 12.

[0044] s23. The turntable speed is controlled by the second control module 37 to rotate the original soil sample and slowly move the cutter slider 22 to control the feed of the cutter blade 21.

Claims

1. An integrated dual-mode geotechnical sample preparation device, characterized in that, Includes a compaction assembly (1), a cutter, and a mounting frame (3); The fixed frame (3) includes a horizontal upper fixed plate (32) and a lower fixed plate (34), the compaction assembly (1) is connected to the upper fixed plate (32), and the cutter is connected to the lower fixed plate (34); The compaction assembly (1) includes a transmission component and a vertical compaction rack (14). The transmission component is fixed to the upper surface of the upper fixed plate (32). A long groove is opened in the center of the upper fixed plate (32). The long groove passes through the upper fixed plate (32). A vertical compaction rack (14) is inserted in the long groove. The compaction rack (14) is connected to the transmission component. A guide component is also connected between the compaction rack (14) and the upper fixed plate (32). The guide component is used to guide the compaction rack (14) to move up and down in the vertical direction. A disturbance protrusion (1431) is connected to the lower end of the compaction rack (14). The disturbance protrusion (1431) is used to disturb the soil when preparing the remolded soil sample. The sample preparation turntable system includes a sample preparation turntable (361), a rotating column, and a rotating motor. The rotating motor is fixed at the center of the lower surface of the lower fixed plate (34). The rotating shaft of the rotating motor is vertically upward. The rotating shaft in the rotating motor is fixed to the rotating column. The upper end of the rotating column is fixed to the sample preparation turntable (361). The rotating column drives the rotating turntable to rotate. The rotating turntable is located on the upper surface of the lower fixed plate (34). The disturbance protrusion (1431) is directly above the rotating turntable. The cutter includes a cutting blade (21) and a cutting slider (22). A slider track (35) is provided on the upper surface of the lower fixed plate (34). The slider track (35) extends from the outside of the lower fixed plate (34) to the sample preparation turntable (361). The cutter and the cutting slider (22) are fixed together, so that the cutting slider (22) slides into the slider track (35).

2. The integrated dual-mode geotechnical sample preparation device according to claim 1, characterized in that, The transmission components include a rotary motor (11), a rotating rod (13), and a gear; the rotary motor (11) is fixed to the upper surface of the upper fixed plate (32), the rotating shaft of the rotary motor (11) is horizontally fixed to the rotating rod (13), the gear is fixedly connected to the rotating rod (13), and the rotating rod (13) drives the gear to rotate; the gear is embedded in the long slot and meshes with the compacted rack (14).

3. The integrated dual-mode geotechnical sample preparation device according to claim 1, characterized in that, The compaction rack (14) includes a rack, a fixing ring, a compaction hammer (143), and a disturbance protrusion (1431). The lower end of the rack is connected to the fixing ring, and a threaded hole is opened at the center of the bottom surface of the fixing ring. A vertical compaction hammer (143) is connected in the threaded hole. The threaded connection makes it easy to replace compaction hammers (143) of different diameters. The bottom of the compaction hammer (143) is provided with a disturbance protrusion (1431), which is used to disturb the soil when preparing the soil sample.

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